Here are some suggestions/wishes I would have for RT in decreasing importance:
Guides not in Crop Tool. Could the guides (grid, etc…) be activated independently from the crop tool? I think this should be accesible either on the top or bottom bar but not within a tool. Ideally the guides could be activated with a hot-key. This would, imho, improve work-flow.
Shiftable Vignette Filter. Example: a face is not perfectly centered, then I would like to place the vignette’s center over the face.
Less color toning methods. Are six toning methods needed? I understand, that RT wants to give options, but as it also has aimed a little lately to get more user friendly I wonder if six options are really needed. Is there anything in any method that is not achievable with other methods?
My suggestions would be: LAB blending, LAB Grid and Color Correction.
For those who don’t know me, I think RT is awesome, so this is not meant as critique, just some ideas…